An experiment was carried out at 25 °C by dissolving an unknown mass of magnesium ribbon into excess 1 mol dm–3 hydrochloric aci
d. The volume of gas produced over a period of 6 minutes was measured using a gas syringe. The result was plotted as shown in Figure 1
Time (min)
Figure 1 Volume of gas produced against time
a)Write a balanced equation for its reaction with hydrochloric acid.
(2 marks)
Use the data from Figure 1
to determine the total volume of gas produced (1mark)
to calculate the moles of gas produced at STP (2 marks)
[1 mole of any gas at STP has a volume of 22 400 cm3.]
to calculate the mass of limestone magnesium used.
(2 marks)
(i) What is meant by the term ‘rate of reaction’?
(1 mark )
Besides temperature, identify TWO other factors that can affect the rate of the reaction.
marks)
1 answer:
Answer:
to calculate the mass of limestone magnesium used.
Explanation:
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